量子化光场作用下超导电荷比特的Pancharatnam相(英文)  

Pancharatnam phase in a superconducting charge qubit in the presence of quantized field

作　　者：邹健[1] 蔡金芳[1] 邵彬[1] 李前树[2] 

机构地区：[1]北京理工大学物理系,北京100081 [2]北京理工大学化学系,北京100081

出　　处：《量子电子学报》2006年第1期57-60,共4页Chinese Journal of Quantum Electronics

基　　金：Supported by National Natural Science Foundation of China under Grant(10374007)

摘　　要：考虑一个在经典电压偏置和量子化微波场作用下的电荷库伯对箱,研究了该系统的Pancharatnam相和几何相的时间演化行为,研究发现Pancharatnam相随时间是减小的,几何相随时间是增加的,并且当Pancharatnam相减小的速率增大时,几何相增加的速率减小;反之当Pancharatnam相减少的速率减小时,几何相增加的速率增加。We consider a single-Cooper-pair box biased by a classical voltage and also irradiated by a single-mode quantized field. We investigate the dynamical behavior of the Pancharatnam phase and the geometric phase of the system, and find that the dynamic behavior of the Pancharatnam phase decreases with time, and the geometric phase increases with time. When the decreasing rate of Pancharatnam phase is large, the increasing rate of geometric phase is small, and vice versa.

关 键 词：量子光学 电荷库伯对箱 Pancharatnam相 几何相 

分 类 号：O431.2[机械工程—光学工程]